Method and computer program stored in computer-readable medium for converting sort script to reuse jcl in different encoding environment

The invention encoding this sort script conversion method and a computer to re-use the JCL in different environments - relates to a readable computer program stored in a medium, in one embodiment according to the present invention is a computer-stored in a readable medium, the computer as causes computer program for to perform the steps of the steps job control language (job control Languge, JCL) at least one job step (job step) the classification step (step a), running in the working step program ( program, PGM), the data set name (dataset name, DSN) and a data description (a file description corresponding extracting a data Descriptin, DD) (step B), from the execution program source corresponding to the executing program to the data description (description file, FD) a step of obtaining (step C), the first copybook (copy on the basis of the file description Generating a Book) (step D), wherein the step of determining the validity by the first copybook compared to the sort field (SORT FIELD) included in the operation step (Step E), and wherein according to the judgment result of the validity the encoding may have a step (step F) of storing to produce a second copy books to the first copybook base to provide a sort script conversion program for re-use in other environments JCL.